Hydroxytyrosol is widely recognized for its powerful antioxidant properties, making it valuable in dietary supplements and functional foods aimed at promoting heart health and reducing oxidative stress. It is commonly used in nutraceuticals due to its ability to protect cells from free radical damage. In cosmetics, hydroxytyrosol is added to skincare products for its anti-aging effects, helping to maintain skin elasticity and reduce signs of aging. It also shows potential in pharmaceutical applications, particularly in formulations targeting inflammation, neurodegenerative diseases, and metabolic disorders. Due to its natural origin and safety profile, it is increasingly used as a natural preservative in food and beverage industries to extend shelf life and enhance health benefits.